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Cocaine continues to be one of the most widely used substances of abuse around the world. In the US, an estimated 1.4 million individuals (0.5%) > 12 years were current (past month) cocaine users in 2011. Currently, no FDA-approved pharmacologic treatments are available for cocaine addiction; thus, this remains a serious public health problem without an effective pharmacological treatment. A promising lead towards an effective treatment comes from a recent finding that pretreatment with oral l-tetrahydropalmitine (l-THP) in rats attenuated the cocaine seeking associated with a cocaine challenge, while having no motor effects. This finding stimulated our group to test the pharmacokinetics and safety of l-THP in a phase I study of people with cocaine use. Preliminary findings show l-THP is safe and well tolerated in cocaine users, with no adverse interactions with cocaine.
This study will test the efficacy and safety of l-THP for abstinence in those with cocaine addiction in a phase II pilot study (N=24). Secondarily, we will examine the effects of these medications on craving.
Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Treatment
l-tetrahydropalmatine (l-THP), Placebo
Maryland Psychiatric Research Center
University of Maryland
Published on BioPortfolio: 2014-10-01T16:53:22-0400
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The purified, alkaloidal, extra-potent form of cocaine. It is smoked (free-based), injected intravenously, and orally ingested. Use of crack results in alterations in function of the cardiovascular system, the autonomic nervous system, the central nervous system, and the gastrointestinal system. The slang term "crack" was derived from the crackling sound made upon igniting of this form of cocaine for smoking.
Disorders related or resulting from use of cocaine.
An alkaloid ester extracted from the leaves of plants including coca. It is a local anesthetic and vasoconstrictor and is clinically used for that purpose, particularly in the eye, ear, nose, and throat. It also has powerful central nervous system effects similar to the amphetamines and is a drug of abuse. Cocaine, like amphetamines, acts by multiple mechanisms on brain catecholaminergic neurons; the mechanism of its reinforcing effects is thought to involve inhibition of dopamine uptake.
Misunderstanding among individuals, frequently research subjects, of scientific methods such as randomization and placebo controls.
An effect usually, but not necessarily, beneficial that is attributable to an expectation that the regimen will have an effect, i.e., the effect is due to the power of suggestion.
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